Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6215733 | Digital drive sonar power amplifier | Russell E. Hammond | 2001-04-10 |
| 5999077 | Voltage controlled variable inductor | Russell E. Hammond, Leopold J. Johnson | 1999-12-07 |
| 4950936 | Piezoelectric sandwich polymer transducer | Jay C. Brown | 1990-08-21 |